| 摘要 |
A system and method for measuring the cross sectional diameter of a body lumen are disclosed. A catheter tube having a proximal end, a distal end, and two or more strips formed from equal length parallel slits in the body, the strips normally parallel when the catheter tube is not stressed, the strips bowing outwardly from the tube when the distal end of the tube is stressed in a direction toward the proximal end of the catheter tube is inserted through an opening in a body, means such as a central tube or wire are pulled in a proximal direction to stress the catheter tube and thereby bow the strips outwardly in order to measure an opening such as a hiatal hernia.
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